Update to v1.18.3 (Nightly only) - MMP Performance improvement

The nightly build has just been updated to v 1.18.3, which provides significant performance improvement in the MMP Maximum Cuts (RDKit) node.

On our test machine, the node processed 5000 molecules from ChEMBL with HAC <= 40 in 3.8 seconds (the previous version took 375-400 seconds for the same data set)


We will push this to the stable releases in the coming weeks.